(The other day, I couldn't even find a Usenix C++ proceedings from early '90s online. Stroustrup and other well-known people attended, Usenix was an unusually Internet-savvy organization at the time, and yet, if you were Web-searching, you might never learn that the conference ever happened.)
BTW, I hope Schneier is well, and congratulate him on the bittersweet transition to a less book-weighted household. (I donated a significant collection of books, during a tricky move after grad school. I was gratified to see that a local library's SF collection was pretty much mine, but now very well-worn. However, I lost a set of out-of-print titles in a narrow technical niche, and I really wish they were available now, such as with good digitization.)